Re: [PATCH bpf-next 2/4] xdp: extend xdp_redirect_map with broadcast support

[kernel test robot <lkp@intel.com>]

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Hi Hangbin,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/0day-ci/linux/commits/Hangbin-Liu/xdp-extend-xdp_redirect_map-with-broadcast-support/20210309-153218
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: s390-randconfig-s031-20210309 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-262-g5e674421-dirty
        # https://github.com/0day-ci/linux/commit/d0e1734db001fb56c1428e92145c7f3a001402f3
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Hangbin-Liu/xdp-extend-xdp_redirect_map-with-broadcast-support/20210309-153218
        git checkout d0e1734db001fb56c1428e92145c7f3a001402f3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=s390 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   net/core/filter.c: In function '__bpf_tx_xdp_map':
>> net/core/filter.c:3928:15: error: 'BPF_F_REDIR_BROADCAST' undeclared (first use in this function); did you mean 'BPF_F_BROADCAST'?
    3928 |   if (flags & BPF_F_REDIR_BROADCAST)
         |               ^~~~~~~~~~~~~~~~~~~~~
         |               BPF_F_BROADCAST
   net/core/filter.c:3928:15: note: each undeclared identifier is reported only once for each function it appears in
>> net/core/filter.c:3930:20: error: 'BPF_F_REDIR_EXCLUDE_INGRESS' undeclared (first use in this function); did you mean 'BPF_F_EXCLUDE_INGRESS'?
    3930 |            flags & BPF_F_REDIR_EXCLUDE_INGRESS);
         |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                    BPF_F_EXCLUDE_INGRESS
   net/core/filter.c: In function 'xdp_do_generic_redirect_map':
   net/core/filter.c:4090:19: error: 'BPF_F_REDIR_BROADCAST' undeclared (first use in this function); did you mean 'BPF_F_BROADCAST'?
    4090 |   if (ri->flags & BPF_F_REDIR_BROADCAST)
         |                   ^~~~~~~~~~~~~~~~~~~~~
         |                   BPF_F_BROADCAST
   net/core/filter.c:4092:24: error: 'BPF_F_REDIR_EXCLUDE_INGRESS' undeclared (first use in this function); did you mean 'BPF_F_EXCLUDE_INGRESS'?
    4092 |            ri->flags & BPF_F_REDIR_EXCLUDE_INGRESS);
         |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                        BPF_F_EXCLUDE_INGRESS
   net/core/filter.c: In function '____bpf_xdp_redirect_map':
   net/core/filter.c:4182:44: error: 'BPF_F_REDIR_BROADCAST' undeclared (first use in this function); did you mean 'BPF_F_BROADCAST'?
    4182 |  if (unlikely(!ri->tgt_value) && !(flags & BPF_F_REDIR_BROADCAST)) {
         |                                            ^~~~~~~~~~~~~~~~~~~~~
         |                                            BPF_F_BROADCAST


vim +3928 net/core/filter.c

  3920	
  3921	static int __bpf_tx_xdp_map(struct net_device *dev_rx, void *fwd,
  3922				    struct bpf_map *map, struct xdp_buff *xdp,
  3923				    u32 flags)
  3924	{
  3925		switch (map->map_type) {
  3926		case BPF_MAP_TYPE_DEVMAP:
  3927		case BPF_MAP_TYPE_DEVMAP_HASH:
> 3928			if (flags & BPF_F_REDIR_BROADCAST)
  3929				return dev_map_enqueue_multi(xdp, dev_rx, map,
> 3930							     flags & BPF_F_REDIR_EXCLUDE_INGRESS);
  3931			else
  3932				return dev_map_enqueue(fwd, xdp, dev_rx);
  3933		case BPF_MAP_TYPE_CPUMAP:
  3934			return cpu_map_enqueue(fwd, xdp, dev_rx);
  3935		case BPF_MAP_TYPE_XSKMAP:
  3936			return __xsk_map_redirect(fwd, xdp);
  3937		default:
  3938			return -EBADRQC;
  3939		}
  3940		return 0;
  3941	}
  3942	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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